"So sad u gone home young Mac I had to post this to smile and think about the good Time we had on the set of this movie man god bless ya family. Pittsburg (sic) we lost a real one today," tweeted Snoop Dogg, who appeared with Miller in 2013's "Scary Movie 5."

"...You were such an incredible person," Post Malone tweeted. "You changed so many lives. Had so much love in your heart. You inspired me throughout high school, and I wouldn't be where I was today without you. Never a more kind and sincere and beautiful person..."

"I don't know what to say Mac Miller took me on my second tour ever," Chance The Rapper posted. "But beyond helping me launch my career he was one of the sweetest guys I ever knew. Great man. I loved him for real. Im (sic) completely broken. God bless him."